Fire-box for boilers.



HRB BOX POR BOILERS.

H. JAGOBS. ADM'LN ISTRATQR,

URE BOX POR BOLEBS.

APPLGATION FILED DBK/127, MME

Patented Jan.

6 SHEETS-SHEET 2,

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COOOOOO `OOOOOO F. M. JACBS, DEGD. HA JAGQBS. ADMIMSTRATOR.

HRE BOX FOR BOLERS.

APPLICATION FILED 13190.27, 19m.

Patented Jan. 19, 9l5.

.S E S n@ w Q n l, .f o 5 wz u, QW :if 1am,

F, M. JACOBS. DEUD. H. JACOBS. ADMINISTRATOR.

m'ox POR Bouma. APPLICATION LED DEG. 27. 1913. i

Fatente Jan. 19, 19in.

G SHEETS-SHEET 4.

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La. l

"Ff M. JAGUBS, DEGD.

H. JAGDBS, ADMNSTEATOR.

FIRE BOX FOR BOXLEES. APPLIGA'HON FILED DEG. 27, 1913.

G SHEETS-SSE Witnesses 1;. M. JACOBS, DBOD. "1L JACOBS, ADMINISTRATOR. NRE BOE FOR BGILERS.

APYLIGATDN HLBD DEC. 27, 1913,

` Patented Jan. 19, 1915.

crease the grate tures of the invention FRANK M. JACOBS, DECEASED, LATE OF ADMINISTRATOR 0 .ATCHISON. F ATCHISON, KANSAS.

KANSAS. BY HENRY JAcoBs,

FIRE-BOX FOR BOILERS.

memos.

Application filed December 27. 1913.

To ZZZ 107mm fit may conc/rn Be it known that I, Hnvar .Moons a citizen of the United States, and a resident of Atchison, in the count;T ot Atchison and State ot Kansas. am the administrator of the estate of lin-wn M. Kartons, deceased, late a citizen ot the United States and resident ot Atchison, Kansas, who invented certain new and useful Improvements in Firedoxes tor Boilers, of which the following is a description. reference being had to the accompanying drawings. which loro; a partof the specification.

The invention, as shown in the cvemplications. relates more particulfu'l)y to tireboxes for the locomotive type ot boilers. it being understood, however, that certain fea may be embodied in boilers of. other tvpes.

One object of the invention is elly increase the heating surface ot' thc tirebox in an effective manner, which is accomplished by providing a heating surface in and around the combustion chamber, coinposed ot water tubes arranged to constitute the side walls of the lire-,box or combustion chamber, instead of the usual stayed side and crown sheets.

Another object of vide a simple. eli'icient, and box, preferably ot the locomotive type, wherein the water tubes. constituting the side walls of the tireliox or combustion chamber, connect with a hollow mud-ring or header at the bottoni ot the lire-box or`coinbustion chamber and with a plurality of suitable drums or chambers at thc top, sul stantialli7 as and in the manner illustrated in the dra-wings.

The invention contemplates a material increase or the heating surface through an arrangement oi the. water tubes whereby the corribustion chamber divided into two compartments bv ai: intei.'eiiii1g wall or partition composed of water tubes. so arranged. however, as not to materially dei area` but greatly increasing the heating surface exposed to the hotgases ofconibustion; the invention contemplating thc invention is to promexpensh 'e lirean arrangement ot the water tubes or heat ing surfaces so as not to interfere with or battle the hot gases in their passages through the tire lues ot the boiler. A further object of the invention is-the Specification of Letters Patent.

to materi- Patentedan. 19, 1915. Serial No. 809,058.

provision of a' non-explosive fire-box which ma)Y be readily applied to any ordinary existing locomotive boiler by the mere replacement of the present type of tire-box.

A further object of the invention is to greatlyv eliminate the ditliculty of staying the iireebox and shell sheets of the ordinary tire-box by replacing them with water tubes and drums or headers at the top and with a heavy, hollow mud-ring at the bottom.

`hese various advantages, as well as others, will more readily be apparent from the following detailed description of the accompanying drawings, wherein Figure l is a longitudinal View of a lirebox embodying the invention, with portions ot the shell wrapper removed to more clearly illustrate the tubular construction Within, and with a portion of the mud-ring or header shown in section. Fig. 2 is an end elevation of the back head ot the fire-box illustrated in Fig. l and showing the location of the lire-doors and removable heads which register with the top drums or headers forming part of the crown or top of the lire-box. Fig. 3 is a longitudinal sectional view taken on the line 6*?) of Figs. 2 and 4, lookingin the direction of the arrows, illustrating the. detailed construction of the iniddle section of the hollow mud-ring or bottom header and its connections with the central top drum of the header. Fig'. 4. is a vertical sectional vi en taken on the line o o of Figs. l and 3, looking in the direction of the arrows, and more clcarl)7 illustrating the tubular connections between the partly hollow mud-ring which torins the bottom headers and the top drums or headers; this figure clearlj.v sl'iowing the free circulation of the water a tlordcd b v the front and back heads of .the dichos. Fig. 5 is a perspective View ot the pai-tlv hollow mud-ring which forms the bottom headers, a portion being' shown iu section to more clearly7 reveal the manner ot construction. .Fi 6 is a vertical sectional end elevation of a modified form of the invention, illustrating its application to an ogee type ot locomotive lire-box, with portions ol the tubular connections being shown in section.

ln the exeinpliication of the invention as illustrated in Figs. l and 3, only a portion Aot the cylindrical barrel or shell 10 of the boiler is shown, Which shell is secured to a ls esnirhig the ilues to the one-piece throat sheet l1. The throat sheet is preferably constructed as shown, but the saine may be slightly altered to lit the cylindrical boiler shell when the improved firebox herein shown and described is intended to replace the ordinary type of lire-loon on a locomotive boiler. As clearly shown in the drawings, the throat sheet 11 is scour preferablyby the rivets 12, 3, to the boiler shell10, and to the front head and due sheet 18 by the rivets 1'-l. ln order thatthe rivet seam may called tight at any time, a calking strip is provided between the throat sheet 11 and the flue sheet 13. vThe flat surfacesl of the throat sheet and iiue sheet are stayed to each other by 'means of the stay bolts 16, where oppositely disposed surfaces are presented; and by anchor sling stays 1( where but one sheet requires support, as very clearly shown in Fig. 3. The 'flue sheet and front head 13 is provided with an olii-set 18, around the flue or hre tube iace, 4and with an oE-set i9 around 'he extreme perimeter, in order to reduce and compensate any internal `strain that may he set up in the sheet .due to any unequal expansion or contraction on account of the varied temperatures to which the different sections of the sheet are suhiected. This lieatureo the construction is more clearly illustrated in Fig. e.

The lilies or fire-tubes 20 'of the boiler may he secured in the due sheet 13 in any suitable manner; it is preferred, however, to weld them integrally together, either autogenously or electrically, as this method ci? flue sheet has been proven very advantageous are exposed to the intensely hot mud-ring 21, which is preferably a steel casting in the nature' ci a hollowed rectanguiar frame having a central longitudinal portion, as very clearly shown in Fig. 5, has its longitudinal section cast hollow to form the bottom header ior the water tubes 22, which latter form the side and central walls of the fire-hon, as illustrated. in the first figures of the drawings; the ends or transverse sections of the mud-ring are solid gases. The

with the. exception of the openings which" communicate with the hollow chambers of the longitudinal sections and with the water legs. The top surfaces of the longitudinal hollow walls of the mud-ring 21 are provided with suitable openings or holes 24:, see Fig. 5, through which the water tubes 22 'may enter and be secured in any'suitable manner common to boiler practice, but preferably be welded integrally with the mud-'i ring, which may suitable openings or orifices 25 arranged 1nl the bottom side of the longitudinal hollow sections opposite to each tube-end, as very clearly shown in Figs. 1, 3, and 5.v The openings or orifices 25. arranged in the hotsee Figs. l and he easily l where the parte he accomplished through nasales tom surface ofthe mud-ring, may he closed in any suitable manner, preferably hy the use o threaded plugs 26, as shown in the drawings. The front and nach heads of the ire-hox convey ample water to the longitudinel hollow sections oi the mud-ring 21 to supply the circulating water through the water tubes rPhe upper or crown surface of the fire-box is :termed or nrovided withI three drums or headers 2T, 2i, 27, see Fig. 4, with which the water tubes 22 coinrnunicate. As very clearly shownin Fig. 4,

the water/tubes 22 are arranged in series," form the` that is, those water tubes 'which side walls of the lire-box alternately enter the sidedrum and the central drum,while the water tubes 'forming the central ,wall of he lire-box alternately enter theside drums.' is is clearly app arent, 'this construction per-y inits the `water tubes lattice worl; rover the crown or top of the lire-box through which 'the hot gases circulate and inpinge against the bottom half of each of the top drums or headers 27,"thus forming an exceptionally large andelicient' Vhre-box or combustion chamber heating surface, which is quite a desidera'tum in loco'- niotive tire-boxes. all preferably vvprovided with a"double reverse vbend as shown at 22' 'and 2 2", see Fig. el, in order to give the leastpofssible strain on the tubes due to unequal expansionand contraction. The water tuhes 22 may be secured in the drums or headers 27 in any aipproved manner but preferably hy welding thorn integrally. rEhe top headers or drums 2T are preferably in the nature oi tubes or cylinders extending; throughout the entire length of the fire-hex 'from the nue-sheet to the doer-sheet, as very clearly shown in Figs. 1 andi; and it is preferable to provide each oli the headers or drunis with an opening in the upper surface thereof which is normally closed hy cover plates 28, 28, t28,

which may loe cu'red to the drums or headers in any approved mannenas for example by rivets 29, see Figs. i plates 2S are secured after the' water tubes and 3, The cover in place, preferably,

method of forming the top headers or drulns 22 have all been se. cured in the drums or headers 27. This rllhe watery tubes 22 are ers, as the 'Welder or operator can 'ell` outside of the drums or' headers and operate his torch through the top openingofthe drums, and thus avoid working in` closey quarters and in the intense4 heat lcaused,'loyjV the welding flame or arc, t or headers have 'their'QrWard-ends properly secured in the flue-sheetr 13 andk of course, are open to the water space of the ends ofthetop hoiler, while the rearward` drums or headers 27 are properly secured to the fire-door sheet 30, as very clearly shown The topv Lisanne upper part of the re-box and communicating with said 'Huid-containing heads, a mudring the longitudinal portions whereof are provided with fluid containing chambers independent of each other and communicating with said front and said rear fluid-Contain` ing head, n plurality of Huid conveying tubes intel-medial of said members and the chambers of said mud-ring, said tubes being arranged in series disposed longitudinally ot' the lire-box with each alternate tube con nected with e. different iiuidcontaining vmembere und means whereb;7 access to the Chambers of the mud-ring may be had :it points coincident with the points ol Coininuniefition between said chambers and the llnid conveying tubes.

5. A hre-box ot the class described, prrr vided with n front and a beek fluid-Contax'n` ing head. :i plurnlitjY of fluid-containing members longitudinally disposed in the upper part of the lire-box and establishing communication between the front und the beck fluid-containing heed, n rnud-ring tlu` longitudinallyv disposed portions whereof nre provided with liuid-eonteining ehnnr bers independent ol' one another. fluid en. vering ineens interniefflinte of snid fini-:leontnining nienihers und the Chambers of the mud-ring. #rnd llnid conveying ineens being arranged to torni th side walls ot' the lire-box with the alternate. portions :it the` upper ends'ol said .means noni iunienting with :i dill'erent {luid-containing member. means wliereojfv nreess to thi` rhnnibers of the mud-ring niej be hnd throuffh the bottoni surface ther-ooi". und menos whereby neeess to the liuideonhiinin.T members he hud through lthe. boel: hond of the lirebox.

(l. A firebox of the (naiss i'leseribod. orovided with e .front und n hurl; iiuid-coni,..ining head, plurality.Y oll lluid-contniningf members nrrnnnrd :dong the longitudinal center line und sides ot' ihn upper pin-t oi' the fire-box. d nien'ibris heilig indoinmd ent of one Another and lowing' coinmunirw tion et opposite ends with the vt'ronl; :ind the bnel: fluid-containing heed :ind constitutior`r Y. `the mein portion ol the crown ot the lire Debox, o. mud-ring: the longitudinal portions whereof nre provided with .lluideontnining chambers independent ot' one another und communionting` et their ends with the front :ind the buch llnid-eonrnining' heads. und fluid-ronroving' tubes intermediate ot' seid members `und the ohznnlnrs of the mud-ringA suid tubes brin;V urrungeiil in series dispos'rwl lolrritudilmlljy oli .the iii-(hbox with the upper ends ot the tubes provided with n double row Verse bond ind nlternntel)V ronnecting with n different header.

7. ln n lire-box ot' the vlnss uuid-ringT provided wih hollow longitudr null)r disposed portions :ind solid trimsversely disposed portions. the hollow lono'idosrribed. u

l). In u lire-him ot the class described, n

n nd two portions disposed inurl-ruig provided with :i central side longitudinally disposed hollow rounorlwl together by transversely solid portions` the lungitudinnlli` disposed portions lic-ing prmirled with openings in tlnl upper .surl'zu'es thereof for establishingT ronnnnnirniim with the rhzmibers therein, und nun-ins wliorelrr :ici'ess to said elnunbers muy be lnnl.

lll. ln n Z'rr'liox o1" the rlr" 1und1-ing linxiun hollow lon posed portions4 ronnrrtml :t ferner hy solid irons-xo ly dispos-od portions. the upper surfnwos of' the longirudiinii porions being profiilr-'vl rfi: .poniu-rs infn-hyrounnunirn- Lion unl lh:-

wllhin .seid portions inni' he esinlilishid. thilon'or surlzu'es of .mid hmnitudinnllidisposed portionsbein;r provided with openings in :dineinent 'with iho. in iln1 upper sur'lures. und menos roinornlily forni d in .ho oinnings in the lower sur es .vhorrlrv u llui'd tight Connec- 7 tion unir or .smid :non bring :irizinn'ol in ser s dis" posed lo lQiioliu.illv\ of lhi lire-box' with the oml .si-e i ol' son! nii-:ins vonslitutinq n -Leutrnl woll el' he lire hot whih` the other :se rios ronsiulrtho .sido wrzlls ol: the tireliox.

l2. A lirix llo): ol' the rlnss desrribed. pro- -vide/l with n' l'ront :1nd u hui-lt fluid-ronl'ninin.;r hond. n plnrnliiiv of lluidronl'niniog nwnihers :1i-ranged longitudirmll)7 in the up por purl oi' tho lire-box und Communicating :it opposihl "ndsl with the front und the bool( llnid--vontnining hoods. n mud-rim;r having hollow longitiulinnlly disposed portions 3 0 d nel ing in "emmen ud-rinjgf :ind two or le ,muy oe estzihlieheil, und means Wheief to the drums or l'emlers and to the -s (iff the umd-ring muy be had nl?, win-'sident with the ends of the Wnei e i of the ihehox :unl independent of naher, n neuk-line havin 'vvo :n Genn-el longnflilnnily leposeil holle--V twn fmna' 'water containing chznnloers independent or euch other, :ind plurality of conveying ubes :u'iengecl in longiinlly lieposed series o :is to consiiute Side walls und n Central will of the. i'eseries crmstitnting the central Wall i alternate uloes Connected with gifle ih'mne. while -`die s' iee` Constining eineivzills have die alternate tubes con heated with ille cent1-nl drinn and with the lside drinn ei'l;inged on lle suine 'eSpeCt-le el :is sind Series of tubes.

liuiglinellv d' i l, ed in the upper y he Iemx :mil spaced apart with iliel'venin la ,lle 'ineens of non-hein-oonl leiinh u muil-fing 'ihe longitudiiml portions where-of are .u'oide Wi l .1 fl uic?.- oontainng chambers, and wete? inonfejfing tubes lending from 'the Chinnbeis of he mud- 'ing te snif 'h'iuns or headers. the tnfrs oe- 35 ing' array' o in sei-ies and coneiilting the yside n ills oi the iii-eboxwlth the upper enfile he uhes einnmuniouin-S with two of Suid drums o1 headers.

. A fire-bof; of che class described, conn- U' n plni'eli-y of dye-.ms oi' headers len nclinilljv disposed in the Tipper pauof the upjei drums or being conneeeil or heexie irehox ol the Class described, provided with \\eei-lie;if hot-h enfle of the lire-b x, one or more drinne or headers 1ongitudinally disposed in ine Hyper pzut 'of the nre-box, n mud-ring piofiilecl with longitudinally disposed uidfontnining chai. bers communicating :it their ends with the Water-heads of the lire-bo):1 and water tubes extending from he Chanihere of the mudi'ing to he header oi' heudeie in the upper peit of the lire-box.

' 26. A nre-box of the class described, Coniprising top and bottom fluid containing ineens extending from end to end of the firebox said ineens being open mi the ends hereof, naef-heads arranged ahoth ends of he fire-hof; and in communication with said means, sind Water tunes vertically disposed between the top :1nd booi'n means and in communication therewith, said enter tubes being arranged in Series *wish the upper ends dispoeeffl lo one side of the Veiicnl axes of the nhes: end adapted o substantially constitue the crown of he lire-box 

